regressions: make gitbranch and git revision visible

Git branch and commit hash are now also  visible in the
CMake Ctest Dashboard by putting the info into
Site and BuildName columnds like this:

Site: @os@-@GitBranch@
BuildName: @Bversion@-@bdate@-@db_type@-@gitrev@

DartConfiguration.tcl.in

@@ -1,7 +1,7 @@
 SourceDirectory: @srcdir@
 BuildDirectory: @regressdir@
-Site: @sitename@
-BuildName: @bversion@-@bdate@-@db_type@-@os@
+Site: @os@-@gitbranch@
+BuildName: @bversion@-@bdate@-@db_type@-@gitrev@
 DropMethod: http
 DropSite: regress.bareos.org
 DropLocation: /submit.php?project=bareos

scripts/create_sed

@@ -33,6 +33,14 @@ if [ -r ${srcdir}/src/include/version.h ]; then
   bversion=`sed -n -e 's/^.*VERSION.*"\(.*\)"$/\1/p' ${srcdir}/src/include/version.h`
   bdate=`sed -n -e 's/^.*LSMDATE.*"\(.*\)"$/\1/p' ${srcdir}/src/include/version.h`
 fi
+
+if git --version >/dev/null; then
+   pushd  ${srcdir}
+   gitbranch=`git rev-parse --abbrev-ref HEAD`
+   gitrev=`git rev-parse --short HEAD`
+   popd
+fi
+
 builddir="${src}"
 hostname="${hostname:-$HOST}"
 
@@ -93,3 +101,6 @@ echo "s%@builddir@%${builddir}%g" >>${out}
 echo "s%@BUILD_DIR@%${builddir}%g" >>${out}
 echo "s%@confdir@%${confdir}%g" >>${out}
 echo "s%@uncomment_dbi@%#%g" >>${out}
+echo "s%@gitbranch@%${gitbranch}%g" >>${out}
+echo "s%@gitrev@%${gitrev}%g" >>${out}
+